C# 如何在C中计算数组中JSON元素的数量#
我正在使用instagram API,当我收到带有此模板标签的最新媒体时: {hashtag}/media/recent 我收到的数据如下:C# 如何在C中计算数组中JSON元素的数量#,c#,arrays,json,json-deserialization,C#,Arrays,Json,Json Deserialization,我正在使用instagram API,当我收到带有此模板标签的最新媒体时: {hashtag}/media/recent 我收到的数据如下: { "pagination": { "next_max_tag_id": "any_number", "deprecation_warning": "next_max_id and min_id are deprecated for this endpoint; use min_tag_id and max_tag_id instead
{
"pagination": {
"next_max_tag_id": "any_number",
"deprecation_warning": "next_max_id and min_id are deprecated for this endpoint; use min_tag_id and max_tag_id instead",
"next_max_id": "any_number",
"next_min_id": "any_number",
"min_tag_id": "any_number",
"next_url": "https://api.instagram.com/v1/tags/{hashtag}/media/recent?access_token={my_personal_access-token}"
},
"meta": {
"code": 200
},
"data": [
{
"attribution": null,
"tags": [
"any_tag",
"any_tag1",
"any_tag2",
"any_tag3"
],
"type": "image",
"location": null,
"comments": {
"count": 0,
"data": []
},
"filter": "Normal",
"created_time": "any_number",
"link": "any_url",
"likes": {
"count": 0,
"data": []
},
"images": {
"low_resolution": {
"url": "any_url",
"width": 320,
"height": 320
},
"thumbnail": {
"url": "any_url",
"width": 150,
"height": 150
},
"standard_resolution": {
"url": "any_url",
"width": 640,
"height": 640
}
},
"users_in_photo": [],
"caption": {
"created_time": "any_number",
"text": "any_content",
"from": {
"username": "any_username",
"profile_picture": "any_url",
"id": "any_number",
"full_name": "any_full_name"
},
"id": "any_number"
},
"user_has_liked": false,
"id": "any_number",
"user": {
"username": "any_username",
"profile_picture": "any_url",
"id": "any_number",
"full_name": "any_full_name"
}
},
等等 正如您所看到的,对象“data”是一个数组,我们还可以看到对象“tags”,它也是数组。如何检查C#中数组的数字元素数组?我试着这样做:
JArray items = (JArray)jsonData["data[0].tags"];
int length = items.Count;
dynamic jsonData = JsonConvert.DeserializeObject<dynamic>(JSON_string);
但它不起作用。我像这样解析JSON:
JArray items = (JArray)jsonData["data[0].tags"];
int length = items.Count;
dynamic jsonData = JsonConvert.DeserializeObject<dynamic>(JSON_string);
动态jsonData=JsonConvert.DeserializeObject(JSON_字符串);
Define“不起作用”我捕捉到一个异常:“对象引用未设置为对象的实例。”Define“不起作用”我捕捉到一个异常:“对象引用未设置为对象的实例。”@mati199537没问题!我添加了一种更简单的方法,使用JsonPath@mati199537没问题!我添加了一种更简单的方法,使用JsonPath